Hot-water and steam heater.



G. R. PASSETT & Ayn. MAGBETH.

HOT WATER AND STEAM HEATER.

APPLICATION FILED JAN. 15

Patented Sept. 21, 1909.

UNTTED STATES PATENT FFTQO GEORGE R. FASSET'I' AND ANDREW D. MACBETI-I, OF LAKEWOOD, OHIO.

HOT-WATER AND STEAM HEATER.

asaaos.

Application filed January 15, 1909.

To all whom it may concern:

Be it known that we, GEORGE E. FASSETT and ANDREW D. MAoBn'rH, citizens of the United States, and residents of Lakewood, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Hot WVater and Steam Heaters, of which we hereby declare the following to be a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

The objects of the invention are to provide a water heating device for quickl providing hot water for a hot water circu ating system, or for generating steam, and the objects of the invention are to provide a heating device in which a free and positive circulation of the heated water is obtained and in which water comes in contact with metal walls to which the heat has been directly applied and in which the bottom and all sides are exposed directly to the flame and are also heating surfaces in direct contact with the water, so as to economize the heat by utilizing all parts of the heated metal to heat the inclosed water. The walls are also so shaped as to project the flame against the heating surfaces in the most eflicient manner.

The invention comprises relatively narrow hollow sections having walls which are spaced apart and integrally connected together at top and bottom. These sections are spaced apart so as to permit of free circulation of the flame or heated products of combustion between them and are inclosed within a suitable casing, which is provided with an elevated outlet flue and with a fire box or heating device underneath.

' The device shown is adapted especially for use with natural or artificial gas but any kind of a fire box could be employed if desired with this heater.

The sides of the sections are provided with wide corrugations so arranged that the surfaces of opposed and adjoining sections will throw the flame from one wall to another and into direct contact therewith and thus obtain the greatest heating efficiency in the most practical manner. These corrugations also extend at a low angle transversely of the side walls and extend upward from the inlet toward the outlet side of the heater so as to cause the flame to crawl along them and prolong the contact therewith, but do Specification of Letters Patent.

Patented Sept. 21, 1909.

Serial No. 472,450.

not make direct connection between the inlet and outlet passages.

A common cylindrical outlet chamber is formed at the upper edge of the heater and passes over all the sections in such a manner as to be constantly subjected to the flame, or hot products of combustion, so that the water will leave the heater in its hottest condition and without danger of previous cooling.

The walls are preferably thin so that the corrugations therein are formed in their interior surfaces as well as in their exterior surfaces, and for this reason the circulation of the water in the heater will correspond in general direction with the direction taken by the flame, and since the corrugations are directed at a low angle the circulation will not be as rapid as if the corrugations were vertically arranged. The walls are also preferably of equal thickness throughout so that there will be no portions anywhere thicker than others to retard the transmission of heat at any part.

The invention further consists in the details of construction and combination and arrangement of parts as hereinafter described, shown in the accompanying drawings and specifically pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of the device showing the exterior casing in section; Fig. 2 is an edge View of the same; Fig. 3 is a perspective view of the device; Fig. 4 is a side elevation of the same device arranged for the generation of steam and provided with a return column.

In these views 1, 1 are the sections which are closely approximated to each other leaving a space preferably of one-half an inch between the adjacent corrugated walls 2 which slightly overlap each other, 3 is the inclosing case, 4t is a base portion supporting the heater and case and the burners 5, 5 are inclosed within it, 6 is a tubular inlet chamber composed of sectional members united together, which communicates with all the sections and 7 is a similar tubular outlet chamber communicating with all the sections and composed of sectional members.

The inlet chamber is located at one lower edge of the heater and the outlet chamber is located over the heater, preferably at the opposite edge toward which the corrugations rise so that a natural current will be caused in the heater between the inlet and outlet chambers, but the current will not be a direct one for the reason that corrugations in the walls are inclined at a low vertical angle and do not direct the current from the inlet to the outlet openings. The location of the outlet chamber over the sections exposes it to the flames passing between the sections and the water therein is therefore maintained at a high degree of temperature before passing into the circulating system.

The communicating sections of the outlet and inlet chambers form the only means of communication between the sections and are closely secured together so as to prevent leakage by means of bolts 8 and 9 placed in the angles of union of these chambers with the sections, so as not to be conspicuous and'the casing is fitted around them at 10 and neatly covers the sections.

'11 is the outlet flue, and the burners are preferably spaced to come intermediate between the sections, so as to cause an immediate upward flow of hot air and flame between them. The flame in rising strikes against the lower faces 12, 12 of the corrugations and travels along them until thrown upward and across the space between the sections to similar surfaces 12, 12 upon the wall of the adjacent section.

As stated the corrugations in the adjacent sections overlap and the flame pursues a tortuous path in rising and also follows the inclination of the corrugations so as to impart its heat quickly to the walls at points where the water is collected in the greatest quantity and hence the greatest heating efficiency is obtained.

The form of construction of this heater to adapt it for the generation of steam varies little from the one already described, but is improved for this purpose by means of the addition of a return column 14: for each section which connects the sectional inlet member with the upper part of the section. The outlet chamber is also preferably larger than for hot water circulation only, and forms amodifled steam dome 15 as shown in Fig. 4.

The addition of the return column causes a definite circulation within the body of each section and prevents a too rapid rise of water and consequent ebullition and foaming of the water in the outlet chamber.

The base portion for the use of gas burners is detachably secured to the sections by means of lugs 16, 17 thereon, and obviously any other form of fire box can be substituted therefor.

Having described the invention what we claim as new and desire to secure by Letters Patent is:

1. In a heater for a hot water system, hollow sections formed of thin metal, having vertical closely approximated side Walls, corrugated externally and internally the said corrugations being relatively wide and inclined at a low angle to the vertical, a common external inlet chamber for all the sections at one lower edge of the heater, and a common outlet chamber for all the sections located at the opposite upper edge and over the heater.

2. In a hot water heater, a series of hollow sections having parallel thin metal side walls, said side walls internally and externally corrugated, and said corrugations inclined at a low vertical angle across said walls, a common inlet chamber located at one lower edge of said heater at the lowest level of said inclined corrugations, a common outlet chamber therefor located above said sections, and at highest elevation of said corrugations and upon the opposite side from said inlet chamber in such a manner that the natural flow of the water will be in the direction of said corrugations, said sections spaced apart, and the adjacent walls of adjoining sections arranged parallel to each other with the re spective corrugations overlapping a heating device underneath said heater and a casing for said heater.

3. A section for a hot water heater consisting of a hollow body having parallel vertical side walls, a tubular sectional inlet opening for said section at one lower corner thereof, a tubular sectional outlet opening at the opposite upper corner thereof arranged above said section, and corrugations in said side walls, inclined upwardly at a low vertical angle and extending across said side walls from the inlet to the outlet side, said corrugations being relatively wide and adapted to direct the flow of the water therein.

4. In a hot water heater, in combination, a series of hollow sections, having parallel vertical side walls, a tubular member of a common inlet chamber for each section, said tubular members connected together, and located at one lower edge of said heater, a tubular member of a common outlet chamber for each section, said outlet members connected together provided with corrugations inclined at a low vertical angle and extending from the inlet side of said heater'to the outlet side thereof, and the adjacent walls of adjoining sections being parallel, the corrugations therein overlapping each other, an inclosing case for said heater and means for applying heat between the sections.

5. In a heater, the combination of a series of narrow hollow sections spaced apart, and provided with a common inlet chamber at their lower edges and with a common outlet chamber at their upper edges, said chambers located on opposite sides of the heater, and the side walls of said sections provided with inclined corrugations, a vertical return column for each section exterior to the inlet side thereof, communicating with said section at its upper and lower ends, and a heating device underneath said sections, and an inclosing casing and flue therefor.

6. In a heater, the combination With a series of hollow sections spaced apart, and having inlet and outlet sides, and corrugated walls, the corrugations therein inclined from said inlet angle, a common inlet chamber, and a common outlet chamber for said sections, said chambers comprising sectional members united together, and a Vertical return column for each section, said column communicating with its respective inlet member and W1th the case for said section,

a flue therefor and a heating means under- 15 neath said sections.

In testimony whereof, We hereunto set our hands this 31 day of December 1908.

GEORGE R. FASSETT. ANDREW D. MACBETI-I.

In presence of- WM. M. MONROE, C. H. OLDs. 

